Composition of matter for forming plastic wall-coverings.



I06. COMPOSITIONS,

COATING OR PLASTIC.

UNITED STATES; PA TEN T OFFICE.

HEINRICH PHILIPP HERMANN, OF KR-ONBERG, GERMANY, ASSIGNOR TO KUNST-PLASTIK-GESELLSCHAFT MIT BESCHRANKTER HAFTUN G, OF FRANKFORT-ON-THE-MAIN, GERMANY.

COMPOSITION OF MATTER FOR FORMING PLASTIC WALL-COVERINGS.

To all whom it may concern:

Be it known that I, HEINRICH PHILIPP llERMANN, a subject of the Emperorof Germany, residing at 31 Eichenstrasse, Kronberg, i. Taunus, Germany,have invented certain new and useful Improvements in Compositions ofMatter for Forming Plastic all-Coverings, of which the following is aspecification.

The present application is a division of my application for LettersPatent in the U. S. Patent Office, filed March 18, 1909, Serial No.484,251.

My invention relates to a composition of matter suitable for forming aplastic mass to be applied to walls and other surfaces, when it isdesired to produce designs in relief on said plastic masses.

The object of the present invention is the production of a plastic masswhich when applied to a rough plastered wall, or other surface, willform an excellent surface on which to produce relief designs by means ofcovers bearing negatives of the designs which it is desired to produce,according to the process described in my said prior application, byvirtue of the fact that the mass will admit of the reproduction of thevery finest details of the design, and will ultimately set to a hardmass with a smooth finish.

The process of providing surfaces with coatings bearing designs inrelief, according to my said prior application, consists in applying acoating of a suitable plastic composition to the surface, such as awall, ceiling or the like which it is desired to cover, and thenimpressing the said coating with the desired design by means of coversprovided on one side with the negative of the said design.

This process is of particular importance in the case of rough plasteredwalls, as the coating can be applied directly on the roughcast surface,so that the usual finishing plaster coat may be dispensed with.

For the purposes of this invention only a composition can be employedwhich is tenacious, does not yield laterally, and which is adapted toreceive the impression of all the details of the design. The entirecomposi- Specification of Letters Patent.

No Drawing. Original application filed March 18, 1909, Serial No.484,251.

filed March 23, 1910. Serial No. 551,134.

Patented Oct. 31, 1911.

Divided and this application W 7 V tion becomes completely hardenedthroughout within 24 hours of the time of application to a wall or othersurface.

According to my invention, a composition suitable for application torough plastered walls may consist of a mixture of Portland cement,plaster of Paris, and sand, and an adhesive for promoting the cohesionof the substances with one another and with the ground, consisting ofresin and deXtrin. Powdered coloring matter may be mixed with the basicmaterials, being chosen accordingto the color or tint desired in thefinished surfaces.

Example: About 154 parts of Portland cement. 30 parts of )laster ofParis parts of sand. and 30 parts of owdered colorin d fl llnematferfare thoroughly miXe toge ier.

part 0 resin and 15 arts of dextrin are added lT)""I'lE mixture. Alltmials which are not already in fine powder must be previously ground toa fine owder. This composition Wm cold, warm, or boiling water at theplace of use. A coat of composition thus produced can withstand shock,and the action of air, water and heat. It may also be provided with acovering such as, for example, a covering of lac or varnish, but can bewashed without such covering.

Hitherto plastic compositions for purposes analogous to those of thepresent invent-ion could only be manufactured in the moist condition, sothat they had to be composed immediately before they were used. It wastherefore difiicult toship them. The composition according to thepresent invention is adapted to remain perfectly dry and pulverized, sothat it may be shipped in bags, and it is only necessary to mix it upwith cold or warm water at the place of use.

I claim:

1. A composition of matter for forming plastic wall coverings,comprising cement, plaster of Paris, sand, resin and dextrin.

2. A composition of matter for forming plastic wall coverings,consisting of cement, plaster of Paris, sand, powdered coloring matter,resin and dextrin.

3. A composition of matter for forming plastic wall coverings,consisting of cement,

plaster of Paris, sand, powdered coloring matter, and an adhesiveconsisting of one part resin and 15 parts dextrin.

4. A composition of matter for forming plastic wall coverings,comprising substantially 15% parts cement, 30 parts plaster of Paris, 96parts sand, mixed with relatively small quantities of an adhesiveconsisting of resin and dextrin,

5. A composition of matter for forming plastic wall coverings,consisting of substantially 15 1 parts cement, 30 parts plaster ofParis, 96 parts sand, 30 parts powdered coloringmatter, mixed with anadhesive consisting of resin and dextrin.

6. A composition of matter for -forming plastic wall coverin sconsisting of the following ingredients and compounded in the followingproportions, to wit; 15 1 parts cement, 30 parts plaster of Paris, 96parts sand, 30 parts powdered coloring matter, one part resin, and 15parts deXtrin, substantially as described.

7. A composition of matter for forming plastic wall coverings,comprising 154 parts cement, 30 parts plaster of Paris, 96 parts sand,one part resin, and 15 parts dextrin.

In testimony whereof I aifix my signature in presence of two witnesses.

HEINRICH PHILlPP HERMANN.

itnesses:

WALTER STERN, JEAN GRUND.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

